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Resaturation of asphalt shingles

a technology of asphalt shingles and resaturation, which is applied in the direction of liquid displacement, other chemical processes, ways, etc., can solve the problems of spontaneous cracking, loss of volatile materials, and shingles breaking, and achieves the effect of easy application and without adverse effects on the environmen

Inactive Publication Date: 2002-12-17
SHINGLE LIFE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

An objective of this invention is to extend the lifetime of asphalt shingle and strip roofs.
Another objective is to provide a resaturant emulsion which allows convenient limitation of the amount of resaturant applied in a single application of the emulsion.
Another objective is to provide a resaturant which has minimal rates of evaporation from the asphalt shingles or strips after treatment.
Another objective is to provide a water clear resaturant solution which avoids or minimizes affects on the color, gloss, or other aesthetic characteristics of asphalt shingles or strips.
A final objective is to provide a method of restoring weathered asphalt shingles and strips which is inexpensive, easily applied in a safe manner, and without adverse effect on the environment.

Problems solved by technology

These effects result in breakage of the shingles, spontaneous cracking, and, subsequently, leakage and are generally taken as an indication that the roof must be replaced.
Evaporation causes loss of volatile materials, in a process which is strongly impacted by temperature.
The asphalt therefore may lose or gain weight.
As the built-up roof ages, the sealant layer becomes eroded, checked, and cracked.
In addition, the felt layers lose their flexibility and become torn.
These processes result in leakage of water through the roof.
A new roof may be applied over the old shingles, but accepted practice requires that old shingles be removed before a third roof is applied, at a removal cost approximating the cost of applying a new roof.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2

An institutional building was the subject a pilot test. The asphalt roof shingles had previously failed. The shingles had weathered to a brittle condition with typical accompanied deformation. The asphalt roof shingles were three tab shingles approximately 10 years old and brown in color. Methyl ester of soybean oil manufactured by Agricultural Environmental Products was applied neat to the asphalt roof shingles using a hand held quart size manual trigger style spray bottle. Methyl ester of soybean oil was applied until the surface was saturated. The pilot test was carried out over a one year period. As the methyl ester of soybean oil was absorbed into the shingle material the oily appearance on the surface of the asphalt roof shingle became less apparent and the shingle became increasingly less brittle. In three weeks the asphalt roof shingles became pliable enough to return to the flat geometry they had when originally installed. The brown asphalt roof shingles did not show an oil...

example 3

An institutional building was the subject a pilot test. The asphalt roof shingles had previously failed. The shingles had weathered to a brittle condition with typical accompanied deformation. The asphalt roof shingles were three tab shingles approximately 20 years old and white in color. Methyl ester of soybean oil manufactured by Agricultural Environmental Products was emulsified in water and applied to the asphalt roof shingles using a hand held quart size manual trigger style spray bottle. The methyl ester of soybean oil emulsion was applied until the surface was saturated. The pilot test was carried out over a six month period. As the methyl ester of soybean oil emulsion dried the wet appearance gradually changed to an oily appearance. As the remaining methyl ester of soybean oil was absorbed into the asphalt roof shingle material the oily appearance on the surface of the asphalt roof shingle became less apparent and the shingle became increasingly less brittle. In three weeks ...

example 4

A water emulsion of the petroleum distillate diesel fuel of TABLE 2 is applied by brushing to a garage with a shingled roof approximately 23 years old. The shingles are saturated with the emulsion and allowed to dry. A flattening of the weathered and curled shingles is observed within 3 weeks of application. The shingles are black and no alteration in color is observed.

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Abstract

A method of maintaining as well as restoring the condition of weathered asphalt shingles and strips which are applied to flat roofs, pitched roofs, or vertical walls. The process involves applying resaturant neat or as a water emulsion. Suitable resaturants include fatty acid methyl esters, petroleum distillates, and water emulsions thereof. The process restores the suppleness and softness of the weathered shingles or strip and adds about three years to the lifetime of the roof. The process may be repeated for additional lifetime extension.

Description

Not Applicable.Not Applicable.REFERENCE TO A "MICROFICHE APPENDIX"Not Applicable.1. Field of the InventionThis invention pertains to a method for maintaining as well as restoring the flatness and flexibility to asphalt roofing shingles and strips of flat roofing.2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 AND 1.98This invention is a method of maintaining as well as restoring the flatness and flexibility to asphalt roofing materials, flat strips and shingles, which have become hardened, inflexible, and may be curled. Hardening, inflexibility, shrinking, and curling is a natural consequence of exposure to the atmosphere, weather and sun for an extended period. These effects result in breakage of the shingles, spontaneous cracking, and, subsequently, leakage and are generally taken as an indication that the roof must be replaced. Such degraded asphalt roofing materials will be termed "aged shingles" in this application.Most asphalt is derived from th...

Claims

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Application Information

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IPC IPC(8): B29C73/02B29C73/00
CPCB29C73/02B29L2031/108C08L95/00C08L2555/34C08L2555/64E04D1/20
Inventor CARR, CHARLES W.
Owner SHINGLE LIFE INC
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